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QOJ
ID | Problem | Submitter | Result | Time | Memory | Language | File size | Submit time | Judge time |
---|---|---|---|---|---|---|---|---|---|
#709855 | #8142. Elevator | zhisheng | RE | 0ms | 0kb | C++20 | 2.1kb | 2024-11-04 17:09:47 | 2024-11-04 17:09:47 |
answer
#include <bits/stdc++.h>
using namespace std;
#define int long long
struct BIT {
std::vector<int> bit; // 树状数组本身
int n; // 数组长度
// 构造函数,初始化树状数组
BIT(int size) : n(size), bit(n + 10, 0) {}
// 获取最低位1的位置
int lowbit(int x) {
return x & (-x);
}
// 更新数组中的值
void add(int idx, int delta) {
while (idx <= n) {
bit[idx] += delta;
idx += lowbit(idx);
}
}
// 查询前缀和
int query(int idx) {
int sum = 0;
while (idx > 0) {
sum += bit[idx];
idx -= lowbit(idx);
}
return sum;
}
// 获取区间和
int rangeQuery(int left, int right) {
return query(right) - query(left - 1);
}
void clear () {
for(auto &x : bit) {
x = 0;
}
}
};
signed main() {
ios::sync_with_stdio(0),cin.tie(0);
int n,m;
cin >> n >> m;
vector <int> a(n + 1);
vector <int> v;
v.push_back(0);
vector <int> ans (n + 1);
for(int i=1;i<=n;i++) {
cin >> a[i];
v.push_back(a[i]);
}
sort(v.begin(),v.end());
v.erase(unique(v.begin(),v.end()),v.end());
BIT t1(n + 1);
BIT t1sz(n + 1);
auto get = [&](int x) {
return lower_bound(v.begin(),v.end(),x) - v.begin() ;
};
for(int i=1;i<=n;i++) {
int x = t1.query(get(a[i]));
int t1szx = t1sz.query(get(a[i]));
// cout << x << " ";
ans[i] += t1szx*a[i] - x + t1szx;
t1.add(get(a[i]),a[i]);
t1sz.add(get(a[i]),1);
}
t1.clear();
t1sz.clear();
for(int i=n;i>=1;i--) {
int x = t1.query(get(a[i]-1));
int t1szx = t1sz.query(get(a[i]-1));
ans[i] += t1szx*a[i] - x ;
t1.add(get(a[i]),a[i]);
t1sz.add(get(a[i]),1);
}
for(int i=1;i<=n;i++) {
if(ans[i] > m - 2) {
cout << -1 << "\n";
}
else cout << ans[i] << "\n";
}
return 0;
}
Details
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Test #1:
score: 0
Runtime Error
input:
6 20 3 8 12 6 9 9